XAudio 2.8 missing GetDeviceCount and GetDeviceDetails with proposed solution

[avandun]

For XAudio 2.8 the functions GetDeviceCount and GetDeviceDetails are not available anymore. This is also in the CSCore lib. I have checked for other solutions to query the devices but haven't found one in the lib. A solution is proposed here: http://blogs.msdn.com/b/chuckw/archive/2012/04/02/xaudio2-and-windows-8-consumer-preview.aspx It's a pity that my C++ skill are too rusty to fix it myself. This would enhance the CScore lib and make it possible to query the devices in 2.8 version. Hope to see it soon.

[filoe]

XAudio 2.8 uses the deviceid of an mmdevice. Use the MMDeviceEnumerator to enumerate devices.

[avandun]

Hi, the devices I have are:

and this is the code:

                List<MMDevice> _devices = new List<MMDevice>();
                using (var mmdeviceEnumerator = new MMDeviceEnumerator())
                {
                    using (
                        var mmdeviceCollection = mmdeviceEnumerator.EnumAudioEndpoints(DataFlow.Render, DeviceState.Active))
                    {
                        foreach (var device in mmdeviceCollection)
                        {
                            _devices.Add(device);
                        }
                    }
                }

                using (var xaudio2 = XAudio2.CreateXAudio2())
                using (var masteringVoice = xaudio2.CreateMasteringVoice(0 ,0,_devices[0].DeviceID))

this results in an exception although the device exists and has a com handler.

so what's the mistake I made ?

[avandun]

Maybe a hint which can help in finding the bug.

[filoe]

I am currently not able to take a look at the code, but which version of XAudio causes this bug. Note that XAudio2.7 (on Windows XP, Vista, 7) uses the an index instead of the MMDeviceID. For XAudio2_7 you have to use the XAudio2_7.GetDeviceCount() Method an the GetDeviceDetails Method instead of the MMDeviceModel.

[filoe]

Should be fixed with the provided example.